I have 2003 ford Windstar and theft light is blinking van won't start. Lost the key so I had to change ignition

Try a spare key ...system is not recognizing the ket

cant turn off problem you can try another key.put key in the ignition turn on position for 3 seconds the security light should turn off.then turn off ignition switch wait 5 to 10 seconds try start vechicle if still fails to start.problem in the theft security system.dealership has to code scan problem could be in the ignition switch which is antenna ring.problem could be transponder key or problem could be in the immobilizer control module and ECM.

at the dealer

theft alarm light on.the car dosent start

close the door and put the key in the door lock and unlock the door ... that should stop the anti theft and your van should start unless the battery is bad.

This vehicle is equipped with PAT (Passive Anti Theft). You will not be able to remedy your problem until the ECM is paired with the new ignition and key. This must be done through the dealership.

you will have to take your vehicle to the nearest dealer the theft system is the issue most likley you will have to replace the ignition switch but you will have to get it properly diagnost do yourself a favor and save u time and money

my 2001 ford windstar wont start, i was driving it and completly lost power it would chug like it was running out of gas then had no power,shut it off and it wouldnt start again after that.I changed the mass air low censor,the fuel pump,the ignition switch,relays and fuses the brain box,i have no idea what to change next have any suggestion that could help that would be great thanks

does it have an autostart? if you have two keys (this will only work if you have two) turn the key to on in the ignition and wait till the theft light goes out do this for each key this may fix your problem.

did you try rocking the wheel side to side while turning the key? will the key turn at all or just wont start the car? -jeff